| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.calcite.rel.mutable; |
| |
| import org.apache.calcite.rex.RexNode; |
| |
| import java.util.Objects; |
| |
| /** Mutable equivalent of {@link org.apache.calcite.rel.core.Filter}. */ |
| public class MutableFilter extends MutableSingleRel { |
| public final RexNode condition; |
| |
| private MutableFilter(MutableRel input, RexNode condition) { |
| super(MutableRelType.FILTER, input.rowType, input); |
| this.condition = condition; |
| } |
| |
| /** |
| * Creates a MutableFilter. |
| * |
| * @param input Input relational expression |
| * @param condition Boolean expression which determines whether a row is |
| * allowed to pass |
| */ |
| public static MutableFilter of(MutableRel input, RexNode condition) { |
| return new MutableFilter(input, condition); |
| } |
| |
| @Override public boolean equals(Object obj) { |
| return obj == this |
| || obj instanceof MutableFilter |
| && condition.equals(((MutableFilter) obj).condition) |
| && input.equals(((MutableFilter) obj).input); |
| } |
| |
| @Override public int hashCode() { |
| return Objects.hash(input, condition); |
| } |
| |
| @Override public StringBuilder digest(StringBuilder buf) { |
| return buf.append("Filter(condition: ").append(condition).append(")"); |
| } |
| |
| @Override public MutableRel clone() { |
| return MutableFilter.of(input.clone(), condition); |
| } |
| } |
| |
| // End MutableFilter.java |